如何从我的Android应用程序将json对象发送到服务器

如何从我的Android应用程序将json对象发送到服务器

您需要使用一个

AsyncTask

类与服务器进行通信。像这样：

这是您的

onCreate

方法。

Button submitButton = (Button) findViewById(R.id.submit_button);submitButton.setonClickListener(new View.onClickListener() {    public void onClick(View v) {        JSonObject postData = new JSonObject();        try { postData.put("name", name.getText().toString()); postData.put("address", address.getText().toString()); postData.put("manufacturer", manufacturer.getText().toString()); postData.put("location", location.getText().toString()); postData.put("type", type.getText().toString()); postData.put("deviceID", deviceID.getText().toString()); new SendDeviceDetails().execute("http://52.88.194.67:8080/IOTProjectServer/registerDevice", postData.toString());        } catch (JSonException e) { e.printStackTrace();        }    }});

这是您的活动课程中的新课程。

private class SendDeviceDetails extends AsyncTask<String, Void, String> {    @Override    protected String doInBackground(String... params) {        String data = "";        HttpURLConnection httpURLConnection = null;        try { httpURLConnection = (HttpURLConnection) new URL(params[0]).openConnection(); httpURLConnection.setRequestMethod("POST"); httpURLConnection.setDoOutput(true); DataOutputStream wr = new DataOutputStream(httpURLConnection.getOutputStream()); wr.writeBytes("PostData=" + params[1]); wr.flush(); wr.close(); InputStream in = httpURLConnection.getInputStream(); InputStreamReader inputStreamReader = new InputStreamReader(in); int inputStreamData = inputStreamReader.read(); while (inputStreamData != -1) {     char current = (char) inputStreamData;     inputStreamData = inputStreamReader.read();     data += current; }        } catch (Exception e) { e.printStackTrace();        } finally { if (httpURLConnection != null) {     httpURLConnection.disconnect(); }        }        return data;    }    @Override    protected void onPostExecute(String result) {        super.onPostExecute(result);        Log.e("TAG", result); // this is expecting a response pre to be sent from your server upon receiving the POST data    }}

这行：

httpURLConnection.setRequestMethod("POST");

将其作为HTTP
POST请求，应在您的服务器上作为POST请求处理。

然后，在服务器上，您需要根据HTTP POST请求中发送的“
PostData”创建一个新的JSON对象。如果您让我们知道您的服务器上使用哪种语言，那么我们可以为您编写一些代码。